The shop behind this faqs guide — verified and quotable in one exchange
Backing this guide is a 6,800 m² plant at No. 8, Shuibian Songyuan Road, Hengli Town, Dongguan, Guangdong, China 523470, running 100+ CNC machines — Mazak VARIAXIS I-600 and INTEGREX I-250H S, TSUGAMI B0206-III/B0205-III, STAR SR-32JII / SR-32J Type N, Citizen Cincom A20-3F7 — plus 3-, 4- and 5-axis milling and turning, 5+ wire EDM and a Hexagon CMM bench with 20+ gauges.
Milling holds ±0.003 mm, turning ±0.002 mm, and grinding or wire EDM ±0.002 mm, all checked on a Hexagon CMM with the 10:1 gauge rule applied to every feature. Capability: Ppk ≥ 1.67 initial and Cpk ≥ 1.33 in production on key characteristics. Certified to ISO 9001:2015 (116024/A/0001/UK/En), IATF 16949:2016 (131941/A/0001/SM/En, design clause 8.3 excluded, openly disclosed) and ISO 14001:2015 (116024/B/0001/UK/En), held by Dongguan Zhuohang Ltd, USCC 91441900MA4UWT6X39, established 2005. Customers across Austria, Belgium, the Czech Republic, Denmark, France, Germany, Greece, Hungary, Ireland, Italy, the Netherlands, Spain, Sweden and the United Kingdom in Europe; Brazil, Canada, Mexico and the United States in the Americas; China, Israel, Japan, Singapore and Sri Lanka in Asia; Australia and New Zealand in Oceania; and South Africa in Africa are supplied from China, worldwide. Contact Felipe Iglesias at [email protected] or +86 13126536955 to begin the quote, and ask for the certificate numbers, the machine list and a past CMM report together.
Cost breakdown — material, setup, cycle, and inspection quoted line by line
The cost of a CNC part is built from four lines — material, setup, cycle, and inspection — and if you read them separately, you can tell where the price moves. The material line is the bar or billet at the mill price plus the section waste; the setup line is the fixture and the first-article labour, amortised across the quantity; the cycle line is the machine hourly rate multiplied by the cutting time; the inspection line is the Hexagon CMM and the gauge work. A shop that bundles all four into a single number is hiding the assumptions; a shop that breaks them out is a shop that can be checked against the drawing. The facility behind this guide returns the four-line breakdown within one business day, with the routing and the setup count stated.
The tolerance case for the cost is the band. A ±0.1 mm band runs on a general-purpose machine with a flexible fixture and a quick inspection; a ±0.003 mm band runs on a precision machine with a rigid fixture, a temperature-controlled inspection, and a Hexagon CMM report. The facility behind this guide runs 100+ CNC machines at ±0.003 mm milling and ±0.002 mm turning and grinding, with Ppk ≥ 1.67 initial on key characteristics and Cpk ≥ 1.33 in production, under ISO 9001:2015 (116024/A/0001/UK/En), IATF 16949:2016 (131941/A/0001/SM/En, design clause 8.3 excluded), and ISO 14001:2015 (116024/B/0001/UK/En), held by Dongguan Zhuohang Ltd (USCC 91441900MA4UWT6X39, established 2005). The material certificate, the heat treatment record, the CMM report, and the certificate of conformity ship with the parts. Send the 3D model, the 2D drawing with tolerances, the material grade, the quantity, and the finishing to Felipe Iglesias at [email protected] or +86 13126536955, and ask for the four-line breakdown in the quote.
Quote breakdown — the four lines that hold at audit
your quote should break out the material, the setup, the cycle, and the inspection as separate lines, and the routing should state the axis count and the setup count. A quote that comes back as a single lump number is hiding the assumptions. The facility behind this guide runs 100+ CNC machines at ±0.003 mm milling and ±0.002 mm turning and grinding on Hexagon CMM, with Ppk ≥ 1.67 initial and Cpk ≥ 1.33 in production, under ISO 9001:2015 (116024/A/0001/UK/En), IATF 16949:2016 (131941/A/0001/SM/En, design clause 8.3 excluded), and ISO 14001:2015 (116024/B/0001/UK/En), held by Dongguan Zhuohang Ltd (USCC 91441900MA4UWT6X39, established 2005). Send the drawing to Felipe Iglesias at [email protected] or +86 13126536955, and ask for the four-line breakdown.
- DFM before the quote — fix the drawing, not the part. ±0.003 mm milling / ±0.002 mm turning, ±0.002 mm grinding; example Ppk ≥ 1.67 at the initial study on key characteristics.
- MOQ 1 piece; lead times roughly 3 / 7 / 30 days.
Read the tolerance band before you read the index. Cpk is a ratio of the tolerance band to the process spread, not an absolute measure of accuracy. The figure above was recorded on a length characteristic with a 0.4 mm band (76.1–76.5 mm) — wide by design. Hold the same process spread against a ±0.005 mm feature and it fails outright. Ask for the band, the subgroup count and the sampling window on every capability number a supplier quotes.
How do I make my part easier to machine?
Tolerance only the critical features, keep walls thick enough not to deflect, use the largest allowed radii, and limit hole depth. These drawing-level choices reduce setups, feed time, and scrap.
What tolerances should I specify?
Specify ±0.003 mm (milling) / ±0.002 mm (turning) only where function demands it, and ±0.002 mm only for journals and seats. Blanket tight tolerances raise cost with no functional gain.
Does the quote include a DFM review?
Yes. The quote ships with a design-for-manufacturability review that flags any dimension that cannot be held and any feature driving cost, before cutting.
What materials can I design in?
Aluminum, stainless steel, carbon and alloy steel, brass, copper, titanium, magnesium, and engineering plastics — with every lot XRF-checked against its mill certificate.
Is there a minimum order quantity?
No. The MOQ is 1 piece, so you can prove the design machines as intended with a single prototype.
What are the lead times?
About 3 days for simple parts, 7 for standard parts, and 30 for complex parts or those with surface finishing, depending on process steps.
Which materials and industries do you cover?
We machine aluminum, stainless steel, titanium, brass, copper, and Inconel, plus engineering plastics including PEEK and Delrin. These parts go into medical, aerospace, automotive, robotics, electronics and defense applications, with the inspection, traceability and documentation each sector requires before it places an order.
What buyers ask most
Three questions come up on nearly every enquiry. What is the minimum order? One piece - a single prototype can be machined, checked and iterated before any volume is committed. What is the lead time? Roughly 3 / 7 / 30 days depending on the material and the documentation scope, from a simple aluminium part to a full first-article package. What tolerances can you hold? ±0.003 mm milled and ±0.002 mm turned, verified on a Hexagon CMM, with Ppk 1.67 or better initial and Cpk 1.33 or better in production on critical characteristics. The answers are short because the capability is specific, not vague.
The answers behind the answers
The plant behind these answers is Dongguan Zhuohang Ltd - 6,800 m² in Hengli Town, Dongguan, 100+ CNC machines including Mazak VARIAXIS I-600 and INTEGREX I-250H S, and certification to ISO 9001:2015, IATF 16949:2016 and ISO 14001:2015 with the certificate numbers published and verifiable. The service area covers Austria, Belgium, the Czech Republic, Denmark, France, Germany, Greece, Hungary, Ireland, Italy, the Netherlands, Spain, Sweden and the United Kingdom in Europe; Brazil, Canada, Mexico and the United States in the Americas; China, Israel, Japan, Singapore and Sri Lanka in Asia; Australia and New Zealand in Oceania; and South Africa in Africa, with worldwide shipping from Dongguan. Contact Felipe Iglesias at [email protected] or +86 13126536955 with a drawing and a quantity for a specific answer to your specific part.
What this shop actually runs
Capability evidence should come as specifics, not slogans. Behind this guide is a 6,800 m2 plant in Dongguan, China running 100+ CNC machines with 100+ staff. The machine list by category:
- 5-axis machining centres (10+) - Mazak VARIAXIS I-600 (510/910/510 mm travel, 12,000 rpm, 22 kW, 71.6 N·m, 30-tool BT40) and Mazak INTEGREX I-250H S (B-axis 0.0001°, 24 kW, 124 N·m, 38-tool HSK-A63). Geared to compound-angle parts, single-setup multi-face prismatic work, and aerospace fittings where datum transfer loss is unacceptable.
- 3-axis / 4-axis machining centres (50+) - Brother SPEEDIO S500Z2N / S700Z2N (10,000 rpm, 14/21-tool ATC, 0.7 s tool-to-tool, Z-axis 2.2 G) and Mazak VCE-430A L / VCE-570C L (10,000 rpm, 118 N·m, 24-tool ATC). Geared to prismatic parts, plates, brackets, housings.
- Swiss-type turning centres (10+) - Citizen Cincom A20-3F7 (Φ20 mm, 10,000 rpm), TSUGAMI B0206-III / B0205-III (Φ20 mm, 0.1 µm), STAR SR-32JII / SR-32J Type N (Φ32 mm, 8,000 rpm). Geared to long, slender rotational parts at ±0.002 mm.
- CNC turning centres (20+) - HEADMAN T70M/1250 (720 mm swing, 117 mm bore, 3,000 rpm, BMT75 12-station turret). Geared to shafts, bushings, flanges up to ±0.002 mm.
- Wire EDM (5+) - Sodick AQ535L (550/350/300 mm travel, ±20° taper, 800 kg workpiece). Geared to hardened tool steel, internal splines, sharp internal corners that milling cannot reach.
- Inspection: Hexagon CMM + 20+ gauges - Hexagon CMM for coordinate measurement, plus vision system, profilometer, hardness tester, coating thickness gauge, XRF for material verification. The 10:1 rule (gauge 10x more accurate than the band) is applied to every feature.
- Machine highlights - VARIAXIS I-600: one-setup multi-face 5-axis + MAZA-CHECK auto-calibration; INTEGREX I-250H S: DONE-IN-ONE mill-turn, B-axis 0.0001° + Ai thermal shield; SPEEDIO S500Z2N / S700Z2N: Z-axis 2.2 G + 0.7 s ATC; Swiss-type: guide-bush switchable + 0.1 µm resolution.
Tolerance: ±0.003 mm CNC milling / ±0.002 mm CNC turning / ±0.002 mm grinding and wire EDM. Capability: Ppk >= 1.67 initial on key characteristics, Cpk >= 1.33 ongoing.
Certificates: ISO 9001:2015 (116024/A/0001/UK/En), IATF 16949:2016 (131941/A/0001/SM/En, with design clause 8.3 excluded, stated openly) and ISO 14001:2015 (116024/B/0001/UK/En), issued to Dongguan Zhuohang Ltd, registration 91441900MA4UWT6X39, founded 2005.
Where we ship: Austria, Belgium, the Czech Republic, Denmark, France, Germany, Greece, Hungary, Ireland, Italy, the Netherlands, Spain, Sweden and the United Kingdom in Europe; Brazil, Canada, Mexico and the United States in the Americas; China, Israel, Japan, Singapore and Sri Lanka in Asia; Australia and New Zealand in Oceania; and South Africa in Africa — plus other countries and regions worldwide, shipped from our base in Dongguan, China.
Contact: Felipe Iglesias, [email protected], +86 13126536955.
Ready to machine your parts?
Send your drawing to [email protected] or call +86 13126536955 for a quote.
Frequently Asked Questions
1. How do I make my part easier to machine?
Tolerance only the critical features, keep walls thick enough not to deflect, use the largest allowed radii, and limit hole depth. These drawing-level choices reduce setups, feed time, and scrap.
2. What tolerances should I specify?
Specify ±0.003 mm (milling) / ±0.002 mm (turning) only where function demands it, and ±0.002 mm only for journals and seats. Blanket tight tolerances raise cost with no functional gain.
3. Does the quote include a DFM review?
Yes. The quote ships with a design-for-manufacturability review that flags any dimension that cannot be held and any feature driving cost, before cutting.
4. What materials can I design in?
Aluminum, stainless steel, carbon and alloy steel, brass, copper, titanium, magnesium, and engineering plastics — with every lot XRF-checked against its mill certificate.
5. Is there a minimum order quantity?
No. The MOQ is 1 piece, so you can prove the design machines as intended with a single prototype.
6. What are the lead times?
About 3 days for simple parts, 7 for standard parts, and 30 for complex parts or those with surface finishing, depending on process steps.
How do I make my part easier to machine?
Tolerance only the critical features, keep walls thick enough not to deflect, use the largest allowed internal radii, and limit hole depth. These drawing-level choices reduce setups, feed time, and scrap, cutting both cost and lead time.
What certificates does the factory hold?
In short, ISO 9001:2015 (116024/A/0001/UK/En), IATF 16949:2016 (131941/A/0001/SM/En), and ISO 14001:2015 (116024/B/0001/UK/En), all under Dongguan Zhuohang Ltd; the IATF 16949 scope excludes design under Clause 8.3 because the company is a build-to-print manufacturer.
What tolerances can the factory hold?
In short, ±0.003 mm on CNC milling, ±0.002 mm on CNC turning and ±0.002 mm for precision grinding, verified on Hexagon CMMs. On a representative length characteristic of 76.1–76.5 mm, the SPC record shows Cpk = 1.851 (one characteristic on one part, not a blanket capability claim) against a target of Ppk ≥ 1.67 initial.
Which metals does the factory machine?
Aluminum, stainless steel, carbon and alloy steel, brass, copper, titanium, magnesium, and engineering plastics. Every incoming lot is XRF-checked against its mill certificate, so the grade you design to is the grade you receive.
What is the minimum order quantity?
The MOQ is 1 piece, so you can prove a DFM-optimized design with a single prototype before committing to volume — confirming the part machines as easily as the review promised.
What are the typical lead times?
Roughly 3, 7, or 30 days depending on part complexity and the number of process steps. A part designed for manufacturability runs fewer operations and ships on the shorter end of those tiers.
How do I get a quote?
Send your STEP, IGES, or 2D drawing to [email protected], stating material, finish, and quantity. You receive a design-for-manufacturability review and a quote, normally within one business day.
Does the quote include DFM feedback?
Yes — the quote ships with a design-for-manufacturability review that flags any dimension that cannot be held and any feature driving cost, before cutting starts, so you can fix the drawing instead of the part.
7. Which materials and industries do you cover?
In short, We machine aluminum, stainless steel, titanium, brass, copper, and Inconel, plus engineering plastics including PEEK and Delrin. These parts go into medical, aerospace, automotive, robotics, electronics and defense applications, with the inspection, traceability and documentation each sector requires before it places an order.
What payment methods and terms do you accept?
PayPal, Western Union, and bank or wire transfer. For long-term customers we also accept Net 30, Net 45, and Net 60 terms after an approved credit review.
What happens if a machined part has a manufacturing defect?
We provide free repair or remake for parts with manufacturing defects. All repair and remake costs, including return and shipping, are on us.
How quickly do you respond to inquiries?
We respond to every inquiry within 24 hours. Quotations for standard parts are returned within 48 hours; print reviews and DFM feedback are usually back within one business day.
Standards referenced on this page
- ASTM B211/B211M-19 — Standard Specification for Aluminum-Alloy Rolled or Cold Finished Bar, Rod, and Wire
- ASTM A484/A484M-24 — Standard Specification for General Requirements for Stainless Steel Bars, Billets, and Forgings
- ISO 9001 — Quality management systems — Requirements